Gene Regulation Welcome to your Gene regulation question series Which of the following is true for genes in the operon Each gene has an independent promoter Each gene has its own ribosome binding site All the genes need separate activation All of the above None Which of the following is a most abundant protein found in bacteria? DNA repair proteins DNA polymerase Elongation factors 1,5 bisphosphate carboxylase/oxygenase None Among the sequences 2, 3 and 4 which base pairing leads to transcription termination Sequence 2 and 3 Sequence 3 and 4 Sequence 2 and 4 Sequence 3 and 3’UTR None Which of the following is not true about operon Genes are clustered on the chromosome May produce polycistronic RNAs Can be operated by a single promoter Each gene of the operon is regulated independent promoter None Which of the following protein is most abundant in the biosphere? DNA repair proteins DNA polymerase Elongation factors 1,5 bisphosphate carboxylase/oxygenase None Which of the following is true about operon Genes are clustered on the chromosome May produce polycistronic RNAs Can be operated by a single promoter All of the above None Post transcriptional as well as post-translational modifications are common in eukaryotic gene regulation True Flase None Which of the following phenomenon may occur when repressor molecule binds to signalling molecule? Increase in the rate of transcription Decrease in the rate of transcription Halting transcription Transcription process stays unaffected I and II None RNA polymerases can be specifically targeted to certain types of promoter consensus because of Operators Repressors Specificity factors Mediators None E. coli can synthesis all essential amino acids True Flase None Operator sequences are DNA polymerase binding site Transcription inducer proteins Repressor binding sites None of the above None What is true about isopropylthiogalactoside (IPTG) A lac operon inducer A substrate for β-galactosidase A repressor None of the above None Time's up
